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Patentad Oct. 25, I898.

R. A. WILSON. ANNEALING BOX.

(Appliutim: and Nov. 20, 1897.)

(Io Iodel.)

UNITED I STATES PATENT OFFICE.

ROBERT A. \VILSON, OF IANTON, OlIlO, ASSIGNOR OF TVVO-TIIIRDS TO II. A. CRONAII AND \V. P. HALL, OF SAME PLACE.

AN NEALINGY-BOX.

SPEQIFICATION forrning' part of Letters Patent No. 613,001, dated October 25, 1898.

Application filed November 26, 1897. .Serial No. 659,911. (No model.)

To all whom it may concern:

Be it known that I, RQBERT A. insert, a citizen of the United States, residing at Canton, Ohio, have invented certain new and usefnl Improvements in Annealing- Boxes, of which the following is a specification.

My invention is an improved annealing-box intended to provide a construction which will be durable and successfully withstand the intense heat'to which these boxes are subjected, the construction being such also as to provide for expansion and contraction of the top plate and such also as to prevent the top plate from sagging or buckling,

In the accompanying drawings, Figure 1 is a plan viewof the annealing-box with the top removed. Fig. 2 is a side elevation with'one end and a part of the top in section. Fig. 3 is a cross-section through the box and top, and Fig. 4 is'a detail view showing a part of one side of the box withthe top plate and its supporting-ledge.

The box may be made of cast or wrought iron or steel, as may be found desirable, and it comprises end sections A and side sections B.- The side'sec'tions may be in two parts, and all the sections I make with interlocking tongues and recesses a and secure the sections together by suitable bolts b, connecting the parts at each joint. The sides, as shown in Fig. 1, are also in section, with tongues in one section fitting in recesses a in the other sec tions, and bolts b secure the sections of the sides together at these joints.- In order to brace the whole structure longitudinally, I.

extend rods 0 between the end plates from end to end, passing the rods through cars (l, which prevent the rods from buckling under the heat and keep them straight, the ears be ing located at intervals on the inner wall of the side sections.

In order to support the top plate, 1 form a ledge 6 around the inner wall of the sections, this ledge projecting inwardly, and atintervals the ledge is slightly extended, as shown at f, and these extended portions are provided with openings adapted to receive threaded bolts 9. The top plate h is of slightly less width and length than the opening constituting the entrance to the box, so as to allow for the contraction and expansion of the plate without buckling, and after the top has been placed upon the ledge the bolts g are passed down through elongated openings 1' in the top plate, these openings allowing for the expansion and contraction, and covering the openings are small plates 70, which form supports forthe heads I, fitting on the ends of the bolts 9. Instead of nuts being used for this purpose any form of fastening will do, provided it keeps the top plate to its seat.

In order to prevent the buckling of the top plate under the intense heat, I stiffen. the plate by ribs n,which extend,preferably,crosswise of the top plate, as shown in Figs. 2 and 3, being boltedvby flanges to-the said plate. The ribs are preferably arched; but this is not essential.

This construction provides a very simple form of annealing-box and one which is very durable by reason of the secure manner in which it is held together and the various parts thereof braced and strengthened.

The bolts which hold the sections together at the corners'havc their ends and nuts located in recesses at in the sections, and they extend therefrom across the joint and through the other section. v

It will be noticed that the ledges are arranged below the upper edge of the sides of the box, so that sand may be filled in this space above the top plate, and this sand will cover the joint about the edges of the top plate, which, it will be seen, does not reach to Y the sides of the box, and in this wayallows for expansion.

The corners of the box are inclined or filleted at G, and the edge of'the top plate will rest against this incline, and the sand will rise and fall as the parts expand and contract.

' In the contracting of the box the incline willallow the sand to slide upon it easily,

and in expanding the sand will drop down,

I The top plate in this box is not bolted light,

ner an I. An annealing-box comprising end andside sections with interlocking tongues and recesses, bolts connecting the sections at the joints and longitudinally-extending bracerods supported in ears on the inner walls of the 'de sections and passing through the end sections, substantially as described.

2. An annealing-box:v comprising the ends, the sides in acetic each section and end having a horizontal :6 thereon, the sections of the sides havingan interlocking tongue and recess between them with transverse connecting-bo1ts,longitudinally-extending bracerods for holding the sections together, and a cover fitting within the top of the box and resting on the horizontal ledges, substantially :5 as described.

3. In combination in an annealing-box, the sides and ends having the horizontal ledges with extensions f at intervals, the inclined [es-Ara] Countersigned;

G. H. DWLL,

Commoner of Patents.

fillet at the corner of the 1edges,a top plate having elongated'openings' amerpoints corresponding to the extensions to overlie the same, the bolts extending from the extensions up through the elongated ozening of thStop p ate and the cover-plates over the elongated openings, substantially as described.

4. In combination, the box, the ledge be- 1 low the upper edge thereof forming an upper sand-receiving space, the top plate resting on the said ledge and being of smaller size than the space between the sides of the box, the

fillets in the corners of the upper space and means for holding the top'plate to allow expension and contraction, substantially as de- ROBERT ALWILSON.

Witnesses:

W.-J. POYSER,

W. H.; CAyNnH.

It is hereby certified that the name of the first'm entioned assign e'ein l ateut No; 613,001, granted October 25, 1898, upon the application 6f Rotemnrwnson, of Canton, Ohio, for an improvement in AnnealingBoiemVwns'errone onsly written and printed H. A. Cronah; that said name should have been written and printed H. A: Cavnah; and that the said Letters Patent should read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed, counter-signed, and sealed this 1st day of Nouember A. 189 8;

'THOS. RY First Assistant Secretary of the Interior. 1

Correction in Lettels Patent No. 613,001.

It is hereby eertified that the name of the firefrmentioned as eigneein Lettere Patent No 613,001, granted October 35, 1898,11p0n the application of Rohert A. Wilson, of Canton, Ohio, for an improvement in Annealing-Bones," wfls'erroneousl y written and printed H. A. Crofiahf that said name shouid have been written and printed H. A. Cavnah; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the calee in the Patent Office.

Signed; countersigned, and sealed this 1st day of November, A. D., 1898..

[SEAL] THOS. RYAN,

Fint A smtant Secrelary of the Inferior. Countersigned:

C. H. DWLL,

Cmni/iiuiom'r of Pafente. 

